Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc51909170e2a444…

MALICIOUS

PDF

67.1 KB Created: 2020-08-18 13:39:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 451a538cd05499ef9a54db97d8ee82c5 SHA-1: 44982e7e624cefcf0083fa6a456188749c18955f SHA-256: dc51909170e2a4447466e5018da3175dd34f6be87873fab87554b0100a97b0e9
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 pointing to 'https://ttraff.com/pify?keyword=tamilplay+2019+malayalam+movies'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on domains like cdn.shopify.com and other less reputable domains. The document body, though heavily obfuscated, contains the same redirector URL, suggesting it's the primary lure. The file's purpose appears to be redirecting users to malicious infrastructure, likely for phishing or malware 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=tamilplay+2019+malayalam+movies In PDF document text
    • http://files.kittyvera.com/uploads/1/3/0/7/130776147/sisizawubasizemu.pdfIn PDF document text
    • http://files.mcfaddenrs.com/uploads/1/3/0/9/130969693/takifememirosi-pejepawefevel-zimiti-xuwowivowikolix.pdfIn PDF document text
    • http://files.evelynsander.com/uploads/1/3/0/9/130969270/0577f9db799263.pdfIn PDF document text
    • http://files.healthypetspetpro.com/uploads/1/3/0/8/130814907/bujuwilomap-dujaga-werikakoked.pdfIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn 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/1/0435/8042/4351/files/best_free_reverb_vst.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/bexosafivebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/98662966036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/24667788138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/4616524280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8984/4641/files/85376098821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1886/0190/files/40236973270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4432/1945/files/advantages_and_disadvantages_of_twisted_pair_cable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/alt_code_for_check_mark.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/north_shore_oahu_weather_report.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://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000be2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xBE2E 8020 bytes
SHA-256: 14fbd4388ec10df0e3589c06d56520691dafabd9a0da42230dcb219aea656b62
font_00_sfnt_off0000aba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA1 5460 bytes
SHA-256: ab5b8a64e3eefb726fb8e34d781b5c39eb5e28025748ab38fe8786251f7b4d6c
font_02_sfnt_off0000da51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA51 10620 bytes
SHA-256: b60c7005e2470c1882cc6df2cbb386dd4276a7b0abc2efeecd90c9969bdb6354