Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1347f3a5565082…

MALICIOUS

PDF

43.6 KB Created: 2020-08-21 01:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495f9aa7e4a1790dc97d67c9794c0db8 SHA-1: cae25973d48849e126295757e0b11bd34eb293c7 SHA-256: 4d1347f3a5565082db51d0ee76663b5c80c852b4cb7663b0d32940dfb21ca82c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, 'https://ttraff.cc/pify?keyword=bticino+manuale+cronotermostato', is presented as a link to a Bticino thermostat manual, suggesting a social engineering lure. The document body, though heavily obfuscated, contains references to this URL and other Shopify links, some of which are benign. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination.

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.cc/pify?keyword=bticino+manuale+cronotermostato
    • http://files.deepwoodcards.com/uploads/1/3/1/6/131636855/0a9f1dc6408b712.pdf
    • http://luvedize.aloradunque.org/uploads/1/3/1/3/131379312/dubirugukimuta-pinagovazibid-rajejoperez.pdf
    • https://cdn.shopify.com/s/files/1/0454/4541/5070/files/pdf_annotator_6_crack.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/tuzarifegopu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7941/7504/files/pokimegetofakaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vinujavezo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4885/files/42954734388.pdf
    • https://cdn.shopify.com/s/files/1/0437/4095/4773/files/56311859109.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/bsc_math_hons_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/english_vocabulary_words_with_tamil_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/damidimo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0659/8040/files/kolat.pdf
    • https://cdn.shopify.com/s/files/1/0431/9405/6861/files/dilebukamev.pdf
    • https://cdn.shopify.com/s/files/1/0433/5393/1944/files/mokewukaxisokifusi.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_off00005dae.bin
c3f160101fc5ab2010847e696e35921afef5819c0e6512f1fa3430d91c626692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAE 4876 bytes
font_01_sfnt_off00006e0f.bin
256f5c980f052295c052ac4074185b8ac111fa209f49334747b46f525365976e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0F 10952 bytes
font_02_sfnt_off000091e5.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91E5 4324 bytes

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