Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d11b38496fd1f4…

MALICIOUS

PDF

66.7 KB Created: 2020-08-07 17:59:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ebec1849b0bf11d854d613f7d007289b SHA-1: e10a6943157d6ff0c09f03e37d6f2514177a7f5f SHA-256: 98d11b38496fd1f483226f2fbbbf4b49edbf8df8228fe7614d5e048690358805
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and multiple links, including one to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=arm+cortex+m3+programming+pdf'. The document body also contains text that appears to be a lure for the URL. Additionally, a heuristic indicates a 'Clipboard command execution lure', suggesting the document may instruct the user to copy and paste commands into a shell. The presence of embedded JS and the malicious redirector link strongly suggest an attempt to deliver a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=arm+cortex+m3+programming+pdf In PDF document text
    • http://files.abridgetoenglish.com/uploads/1/3/0/7/130775361/vuwujiga-riwujaka-widuge.pdfIn PDF document text
    • http://files.eyeslikemineinc.org/uploads/1/3/0/9/130969238/rilijuxeg-pagovotodemizet.pdfIn PDF document text
    • http://files.sarahbrothersbot.com/uploads/1/3/0/8/130873728/zipukapudak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/57094504732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5308/7901/files/buffer_solution_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4288/0160/files/xobibusixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1773/8152/files/42275422211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/nomikoranudikalovadekof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/wunuwiwafufefag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/46238931704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/31125238222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/7033773404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/43639534019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/xuvapebopixobifidetawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/74858045282.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ac5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5E 5276 bytes
SHA-256: 3d853f5e8e40ab0f52e73e95569ce090ca115701676fa088e1803816f4ff946a
font_01_sfnt_off0000be32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE32 15728 bytes
SHA-256: 5807602b90a1cbda6e901d3c6d810ac7e44489a17ceee1909d2dc27ff7f2abb0
font_02_sfnt_off0000ef54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF54 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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