Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e78f81918cf771f…

MALICIOUS

PDF

68.7 KB Created: 2020-08-03 23:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c315b66d2814853294c502c2f09a05bb SHA-1: 87d637f1e2a8af91d12eacf7744a7a0a44818ed0 SHA-256: 4e78f81918cf771fcebc0a1f5d7f9779ffec9df3503ad1676584a5b962734ab9
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The document body, though heavily obfuscated, contains the malicious URL, indicating the primary intent is to redirect the user to a harmful site. No scripts were extracted, limiting the analysis of further payload delivery.

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=how+to+improve+my+spoken+english+fluency+pdf In PDF document text
    • http://files.beautyforashesrwanda.com/uploads/1/3/0/7/130776826/felilolebidof.pdfIn PDF document text
    • http://files.tfcweldcounty.com/uploads/1/3/0/7/130738553/junedinivotubivom.pdfIn PDF document text
    • http://files.allezmag.co/uploads/1/3/1/3/131379035/5788381.pdfIn PDF document text
    • http://files.silviaalfaro.com/uploads/1/3/0/8/130874493/lefujumidexoke.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/1/0438/2123/6384/files/dexivoribenojoteviletu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/walukokakuxuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/nuzelonubog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/e8_b5_b7_e7_82_b9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/nagebozemoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/40051231161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/zewaxebep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/12746787500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4246/4163/files/54538060600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/17232928261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/complete_guide_to_drawing_from_life.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9055/8622/files/dinewurenorezimub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6401/4501/files/tixeporoxizixeluzepizu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ced1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED1 5640 bytes
SHA-256: 8cbfaa1d3f2d373b7de0f56a79363386d68bfd991fbe01cbef5e8bf763619982
font_01_sfnt_off0000e202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE202 10352 bytes
SHA-256: ab573ba4339e1f8c0b4eb03592c652137f88554e5e2bd15a9db0fc715e4d7203

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