Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa59c14ef8cba98…

MALICIOUS

PDF

41.3 KB Created: 2020-08-09 19:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1a19d4c485c7b61f29e60ce0db69ebc SHA-1: b1d28a95c2bfef174e8cf0a75149ac11e52c3564 SHA-256: 1fa59c14ef8cba98e931135c4bc37f77888d1eaeeda6a7ff65625daadf9e3513
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 pointing to 'https://ttraff.com/pify?keyword=testing+speaking+skills+in+english+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure related to 'testing speaking skills'.

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=testing+speaking+skills+in+english+pdf In PDF document text
    • http://files.thriveatwork.com/uploads/1/3/1/4/131452840/fibabusukatutakodav.pdfIn PDF document text
    • http://files.kozynook.com/uploads/1/3/2/8/132815183/1609101.pdfIn PDF document text
    • http://lujox.tbylaccessories.com/uploads/1/3/1/3/131383791/vasexof_sulija_gawina_fagafezamero.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/1/0433/0664/7717/files/dawn_on_a_distant_shore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/10137409339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1470/1735/files/77879581765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4839/files/pro_tools_le_8_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7463/files/fejopuzokikuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/nexevave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1048/8477/files/x_marks_the_spot_runescape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/65344091178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0474/7168/files/60382590304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/48966412630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/wesugalofaxaduzovajukido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6872/7194/files/kunilalivuzuvabenevexuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/bavenejisifapotazak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3749/8276/files/36762850335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/remyzero_save_me.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 7

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_off00006329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6329 5220 bytes
SHA-256: 8fb58beacae0e323f03f83579a2f259b0e3b2f7c8144a8ca298b197ba06795b8
font_01_sfnt_off000074f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F1 10376 bytes
SHA-256: fdce365f22d399ff6e4465259e9aa16ab9fc7175d782a60d9b19c77e69e61098

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