Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3bf515fce66dd1d…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 21:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8da4d17774e736d370cbc0bf4be5167a SHA-1: 9c6328b3fac78369dce45a900e2c16330663ddfa SHA-256: f3bf515fce66dd1dc1473ab751f0f576fa63801e9411c534b036196d7f6e0ec2
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized PDFs. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to lure the user to this malicious site. No scripts were extracted from this sample.

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.com/pify?keyword=free+commendation+certificate+template In PDF document text
    • http://files.terencekuch.net/uploads/1/3/1/3/131383510/vexoremuvu.pdfIn PDF document text
    • http://nojasuse.perfectskinllc.com/uploads/1/3/1/4/131454859/1552031.pdfIn PDF document text
    • http://boton.baijingbox.com/uploads/1/3/1/4/131453267/d5fd1c730e.pdfIn PDF document text
    • http://files.bbbhoneyfarm.com/uploads/1/3/1/4/131453177/nuzazimesarugot-jisiwumemo-xukajawoputorod.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/1/0440/5490/4997/files/14378062029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/tizorojarajibutevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8888/5413/files/35706280353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/hernando_county_school_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5555/3443/files/31469585425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/internal_covariate_shift.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3302/5960/files/conservation_of_mass_lab_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/switzerland_tourism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4166/7734/files/christopher_columbus_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/89102944982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/brian_tracy_quotes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/voting_literacy_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/hide_soft_keyboard_android_autocompletetextview.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F8 4868 bytes
SHA-256: 39f06ce6e249caaf58bd9230f6363933adcbda0977cbbbbb28ddb9d1768022d3
font_01_sfnt_off0000745c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x745C 9620 bytes
SHA-256: fd4d05c498b85ee3515394691121dc1bee31d8d417d916212b21a5c9b74234a2
font_02_sfnt_off0000953b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x953B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176