Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f884cf625b27610…

MALICIOUS

PDF

36.2 KB Created: 2020-08-23 21:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: af1876eea5c203d65bc988c891c20be2 SHA-1: 78231b92ac0ebed97e4c7cdaf742d22883c9ad92 SHA-256: 2f884cf625b2761091e64d0386dd85f9e48171dd82df82e91d56b61d200174fe
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a reference to a "sad alone picture", suggesting a social engineering lure. Additionally, the PDF was flagged by an ML classifier and contains a link farm, indicating a malicious intent to redirect users to potentially harmful content.

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.ru/pify?keyword=sad+alone+picture In PDF document text
    • http://files.fancyshmancynotes.com/uploads/1/3/1/3/131398323/8898633.pdfIn PDF document text
    • http://vepoket.njgraniteconstruction.com/uploads/1/3/0/7/130739024/c7c7b20.pdfIn PDF document text
    • http://files.road-iq.com/uploads/1/3/0/7/130776487/pezewagusuranutog.pdfIn PDF document text
    • http://files.tutormenick.com/uploads/1/3/2/6/132682851/1845549.pdfIn PDF document text
    • http://ruruwig.weeyasmith.com/uploads/1/3/1/4/131407178/xurajavimur_jesosasobe_dupikagugofi_dudexilukejiza.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/1/0437/9744/6816/files/pojumisetogeteru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/5126/9526/files/58621363770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/22747697195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/ximawawidudid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/dc_tv_universe_timeline_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7074/8827/files/calculation_colour_by_numbers_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7450/9213/files/zisemesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7389/6353/files/fuxixufejomoletixiziranaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/morilalizafu.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 4

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_off000046aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46AA 4872 bytes
SHA-256: cbf12aa9ae685b53177638dadab171f83db27953347109cddb12827a5eaba070
font_01_sfnt_off00005739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5739 8988 bytes
SHA-256: e6f277534820806639ad055aada44d7d72def335436d18170715f55eeb877642
font_02_sfnt_off000075e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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