Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b37c24ec60e876c…

MALICIOUS

PDF

62.4 KB Created: 2020-08-14 05:57:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d879897825de406b4073753d9b585007 SHA-1: 34e2263f8f94813c366531f4a59c65d781176a59 SHA-256: 3b37c24ec60e876c71afe1d41cd48266a7ea8fa88dea2cc874c242daf17309ff
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects through ttraff.cc. This redirector is flagged as malicious. The document body, though heavily obfuscated, contains the malicious URL and text suggesting a lure related to 'antivirus software'. The presence of a callback lure heuristic further supports a phishing or scam attempt. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=best+android+mobile+phone+antivirus+software
    • http://xenetig.meyersmagneticjewelry.com/uploads/1/3/0/7/130739061/zumeniratinotezamuf.pdf
    • http://files.machinecrazyforever.com/uploads/1/3/1/1/131164063/valanuzodo.pdf
    • http://files.davidandruth.org/uploads/1/3/0/9/130969262/1136974.pdf
    • http://bulatakup.miracleoncraigstreet.org/uploads/1/3/2/6/132681670/gobobup.pdf
    • http://jatag.armchairacademia.org/uploads/1/3/0/8/130813821/mazireguvis.pdf
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/sotejanil.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/41519856711.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/84798424710.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3785448733.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/berliner_platz_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/6902/2109/files/avengers_theme_song_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/rewamukema.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/saturuguvogipugukane.pdf
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/powershot_g7x_mark_ii_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/1551/1968/files/vujezisijilo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/vulowasana.pdf
    • https://cdn.shopify.com/s/files/1/0434/7189/6741/files/bafg_antrag_hamburg.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/budipimeguzat.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/66704787279.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a7c4.bin
7924745ff06b2cc295d25134986fa8434631789287bee8a7c2198f590b9385ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C4 5504 bytes
font_01_sfnt_off0000ba55.bin
9034676b20cb508a8f519de843776b3cc1b4cc91df85562909f34190118d6436		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA55 10288 bytes
font_02_sfnt_off0000dd88.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD88 4324 bytes

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