Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e4a253c634abf3f…

MALICIOUS

PDF

98.7 KB Created: 2020-08-17 02:24:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df83e408666a75e653fae06640ba0780 SHA-1: b8083daae79da7b76920ba4c832c317b172aacb4 SHA-256: 1e4a253c634abf3f0434039ea2e3fb0f9fd17dfc52cb79bc5bbf836598cd7064
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a download button, aiming to lure users to a malicious site. The link `https://ttraff.com/pify?keyword=caller+id+location+premium+apk` is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=caller+id+location+premium+apk In PDF document text
    • http://files.marylynnswenson.com/uploads/1/3/0/7/130739810/967865.pdfIn PDF document text
    • http://files.austinurbaninstitute.org/uploads/1/3/0/7/130738928/xifukifu.pdfIn PDF document text
    • http://files.thehousefixers.com/uploads/1/3/0/8/130814716/821974.pdfIn PDF document text
    • http://files.atoalabama.com/uploads/1/3/1/4/131483009/musogexagubotiwam.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/1/0439/2471/7723/files/35490279961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/30943902286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/19297651856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9690/6659/files/vertex_of_parabola_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/83317501636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/bunny_ears_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/62566718187.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: abqmobilenotary.com 5 samples

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001069a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069A 3200 bytes
SHA-256: 02967239f03d25a6580898e2cbd3a75047d73a90ab6732354911e8a5c1905de2
font_01_sfnt_off000111f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F3 5008 bytes
SHA-256: 23966ed72c6934a6df06b82e4e5b9bfc9b42ab116e8ba9f9bb24a56a4624cbb1
font_02_sfnt_off000122db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122DB 8660 bytes
SHA-256: 3efcfea58f746c816fcdac610692e747d29821f3f4415f4f4ab23ab335833198
font_03_sfnt_off00013f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F94 11320 bytes
SHA-256: c826224eedd18d625ceb05137a184f36e1190b77e0a61a9d8b2c52074d6a020c
font_04_sfnt_off00016639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16639 16356 bytes
SHA-256: cf1a71d3fc22f906336461679ac621aaf9ea87b4acdc27b617a8d28b7499744e