Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3452b502b835412…

MALICIOUS

PDF

41.3 KB Created: 2020-08-06 15:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59ea7455d918bd6316042074fbfb52c1 SHA-1: eebd5ee4606611f118f88fe0e3f85feb9e067871 SHA-256: d3452b502b835412c3d6f24aab54749021b8a945c9ceaa7a752a2e3e8f4cf0cb
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous links, including the malicious redirector, indicates a link farm or SEO poisoning attack designed to attract users searching for specific document types.

Heuristics 3

  • 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.
  • 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/wb?keyword=break%20even%20analysis%20accounting%20pdf
    • http://files.gchsmarchingband.com/uploads/1/3/1/4/131437680/kuvivudurigubi.pdf
    • http://files.frederickwarner.com/uploads/1/3/0/8/130814121/fa89306ede7b53.pdf
    • http://files.thestoryexploratory.com/uploads/1/3/0/9/130969357/nagaguxa.pdf
    • http://files.thedetailors.com/uploads/1/3/1/3/131384605/6264439.pdf
    • http://files.qwirkykakes.net/uploads/1/3/0/7/130738993/6818289.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdf
    • https://cdn.shopify.com/s/files/1/0429/6910/4540/files/causative_upper_intermediate_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/number_of_decimal_places_python.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/xotinus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/71821963608.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/vuvotiruxiwugiwoxinima.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/gemawadezazat.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/75168894267.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/miss_panda_and_mr_hedgehog.pdf
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/basic_genetics_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/perfect_situation_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/destination_b2_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/38117996699.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000602f.bin
4b7c31b048e712f3924376bd2a6669e983832ba36815be5b3c731c8d91310d4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x602F 5600 bytes
font_01_sfnt_off00007362.bin
9f23d6d1a265954eef97afd9caf5f2c530a6149bd7e90263d1182cdfcfddc55c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7362 10844 bytes