Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3bec528e677727…

MALICIOUS

PDF

60.1 KB Created: 2020-08-18 20:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8772ca19e47a83a14a3097bc5f619539 SHA-1: 4766032d16f686b2180415426cc8b3b0dbd02861 SHA-256: dd3bec528e6777274cfb591e3e7fb8fbfd84c1c9295bbbc7ceca30a9bc2357e0
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bairavi+rajini+songs'. This URL is likely part of a phishing campaign or a malware distribution scheme. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. The document body itself is heavily obfuscated but contains the same redirector URL and a reference to 'wkhtmltopdf', suggesting it was generated programmatically to host these links.

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=bairavi+rajini+songs In PDF document text
    • http://files.dayofgrace.org/uploads/1/3/0/8/130814432/6342674.pdfIn PDF document text
    • http://files.aspiringmindsfw.com/uploads/1/3/1/4/131437636/vaxosusikir.pdfIn PDF document text
    • http://files.vcrhm.org/uploads/1/3/1/4/131453214/toxokado.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/10243213845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/36449286725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mabiwabupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/kimekivekatawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/56925745366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/download_turn_down_for_what.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/zaburzenia_psychiczne_i_emocjonalne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/human_genetics_mcq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/84300802996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/fefoxetulotamefaxap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9898/files/trastorno_esquizofrenia_paranoide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/tabixitijiduwet.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B49 5008 bytes
SHA-256: 461ac92916cd8f362ff4dda1283235641e984fc76ff8a0db639ae08ee2117f8a
font_01_sfnt_off00008c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C65 10140 bytes
SHA-256: 68281fb6a67fbdb229c88ecee0de97bff6a8ab61098bc3566ad3adc16b6fbf79
font_02_sfnt_off0000a7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DA 6388 bytes
SHA-256: 42da117e28b273b3e0b91fef4e9d1372d3a4cfb96cc1b1a713f5d019252fb5ed
font_03_sfnt_off0000bf12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF12 10380 bytes
SHA-256: 2f2a25d207b00a08a316d37baf9dac4e75316f8562d52690686d64a56e5d2b4d