Malicious PDF — malware analysis report

Static analysis result for SHA-256 983bc7741e3c7f33…

MALICIOUS

PDF

49.9 KB Created: 2020-08-09 07:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ec5ee004e74ba140dce080344bf4b16 SHA-1: ece50296c9829276c45e8c81e058b5972807d940 SHA-256: 983bc7741e3c7f3375e0fe85c8b4fb6d8d743402df1de5857d7dac1c4d6bd035
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=ncert+maths+books+for+class+8+pdf', is likely intended to lead the user to a malicious site. The document also exhibits characteristics of a PDF SEO link farm, suggesting a broader campaign to distribute malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.cc/pify?keyword=ncert+maths+books+for+class+8+pdf In PDF document text
    • http://files.onelasalle.com/uploads/1/3/1/4/131438142/duxezivelevu-jasinobelojopo-lodusolipur-jusos.pdfIn PDF document text
    • http://files.ezraacademy.org/uploads/1/3/0/8/130874231/mujajin_xixekak_pimawegabegej.pdfIn PDF document text
    • http://files.jhamrick.com/uploads/1/3/1/6/131607321/5307036.pdfIn PDF document text
    • http://files.cassieabate.com/uploads/1/3/1/4/131409090/8744195.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6068/1109/files/mac_commands_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1568/3744/files/bot_emoji_discord_copy_and_paste.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/garaworurubiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/mockingjay_part_1_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/62406719034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/tajupekogek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/vilawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/duzomijep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0532/0088/files/satonenowopirulazerado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1125/files/wufituve.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00007034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7034 5760 bytes
SHA-256: 9a376a50a5e0cb5022a472983e6657498f54322d55f5596437d8f1b00e28ce3c
font_01_sfnt_off000083a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A5 9936 bytes
SHA-256: 66c3a3407ad9f3ae57656487697be8b27d87d736947413e77cddb97f0bd72633
font_02_sfnt_off0000a5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5B6 16068 bytes
SHA-256: 9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6

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