Malicious PDF — malware analysis report

Static analysis result for SHA-256 77b04ca7244f917e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-25 05:52:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a7857d80d2eda828a5ec99edbf657ad2 SHA-1: 0e5c28ea1f494d5df14c0b017cf86d6ea322f745 SHA-256: 77b04ca7244f917efc3687d6fd38305c0b0ebe9df8c44f8ce572b90dcb9c11f4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The embedded URLs, particularly 'https://ttraff.cc/pify?keyword=embed+javascript+in+html+form', are flagged as malicious redirectors. The document body, though heavily obfuscated, contains references to these URLs and appears to be a lure for free downloads, aligning with phishing or malware distribution tactics.

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.cc/pify?keyword=embed+javascript+in+html+form In PDF document text
    • http://files.planoeastbasketball.net/uploads/1/3/0/9/130969151/kinekubozul_vimoxolabima_poritapononefif_bigasinonid.pdfIn PDF document text
    • http://jipetowum.richardheidenfeldermd.com/uploads/1/3/1/3/131384714/855b2.pdfIn PDF document text
    • http://gineru.rivendellmeadows.com/uploads/1/3/1/1/131163635/873ec2dfe.pdfIn PDF document text
    • http://files.hotcrateshop.com/uploads/1/3/2/8/132815298/tazujuvasu.pdfIn PDF document text
    • http://files.followingthejoy.com/uploads/1/3/0/9/130969424/panavufabemena_kabeburo_vaxuki_mizuvaxoxon.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/1/0427/9618/7815/files/30998885240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/87551347273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/timaxeradibom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5837/1480/files/83965032869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/buddha_hoga_tera_baap_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6816/9121/files/albuterol_ipratropium_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7309/1222/files/2656699954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9449/7698/files/aura_carlos_fuentes_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/waguvixonaduxat.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_off000069df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DF 5628 bytes
SHA-256: f946eea58effb93903df9df57b34ac88a7b4421d6d611be4b2740da0efd678a1
font_01_sfnt_off00007cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 12204 bytes
SHA-256: c3c9abfd010f1645ddbda0406670dee18bdce7ab31404f06226c1992e6b8deed

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