Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab5a78d698bc630…

MALICIOUS

PDF

38.3 KB Created: 2020-08-22 01:58:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da788f4b1513233dbf368dca107ad2cb SHA-1: d3769c83164afc80abde0a705729e4d9f0046171 SHA-256: 8ab5a78d698bc6305eece6cd9b79f8f71a0f12d518f3ddb4ed423bdadae4aeae
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains hosting other PDFs, and one critical link to a known malicious redirector at ttraff.com. This suggests a link farm or redirection strategy to obscure the ultimate malicious destination. The ML classifier strongly supports the malicious verdict. 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=blank+sheet+of+paper+app In PDF document text
    • http://files.theoptometrygroup.net/uploads/1/3/2/3/132303219/nokagidu.pdfIn PDF document text
    • http://jivofuxu.kappagammachi.com/uploads/1/3/1/8/131856726/60e6dac8754.pdfIn PDF document text
    • http://files.anglersarsenaltx.com/uploads/1/3/1/8/131871725/9375144.pdfIn PDF document text
    • http://files.kailaskomfort.org/uploads/1/3/0/7/130775727/wetedixuxuxexig.pdfIn PDF document text
    • http://files.proyecto1867.com/uploads/1/3/1/4/131452870/najokebilaluxe.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/1/0429/6169/8969/files/tenukunelataludowur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2204/8667/files/bufizubomowitikesuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/national_lottery_scratchcards_claim_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/recuva_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2397/2005/files/calculus_early_transcendental_functions_larson_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12091312038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/75298410966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3181/2504/files/nililuzagifibewivumeseke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0521/2832/files/define_cavernous_malformation.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off000049df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49DF 6648 bytes
SHA-256: fb2948cd82ee9e21e92b184d2602bfd31c1d8a5ee934155d56ac5ceecb72d2f4
font_01_sfnt_off00005a57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A57 5104 bytes
SHA-256: ce46b03bac22acb8bba32a1ed4e6edff2a7b3e22ad8a6d70c645fcb63db60141
font_02_sfnt_off00006bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAC 9464 bytes
SHA-256: d7fb7a0f032c8f4d39c87b41789eeff3d9dc9bf936af5bc476203f65627a6ec3

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