Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac0395ff3a8f70e…

MALICIOUS

PDF

39.0 KB Created: 2020-08-27 23:33:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ced87a9565bba3a65b0b0f300608fee6 SHA-1: 7a2f50f4440330e5a1da9b7cfde846ae51c9a9c8 SHA-256: 1ac0395ff3a8f70e6e4b011b6d25aafa860d2f6a356df0a872bdb3a17f130061
152 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to disguise the malicious destination. The presence of numerous links, many pointing to Shopify domains hosting PDF files, indicates a link farm or SEO poisoning tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.cc/pify?keyword=boulevard+of+broken+dreams+320kbps+s
    • http://files.fiddleheadcellars.com/uploads/1/3/0/9/130969083/92e3c551e.pdf
    • http://files.creativeiceskating.com/uploads/1/3/1/4/131482975/dajegawol.pdf
    • http://files.layover-tour-beijing.com/uploads/1/3/2/6/132680852/xujumeteve_ximavoboxeb_dizelipesi.pdf
    • http://files.rinmakeup.com/uploads/1/3/1/4/131438616/96f38c8613d.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/around_the_world_in_80_days_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/metodos_anticonceptivos_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0464/7705/0024/files/20824601737.pdf
    • https://cdn.shopify.com/s/files/1/0437/3987/3429/files/faded_zhu_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/history_of_christianity_timeline.pdf
    • https://cdn.shopify.com/s/files/1/0449/4937/3087/files/akuntansi_pemerintahan_deddi_nordiawan.pdf
    • https://cdn.shopify.com/s/files/1/0429/1257/9747/files/xajusan.pdf
    • https://cdn.shopify.com/s/files/1/0431/5771/7152/files/61182171455.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/hp_deskjet_2655_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/47558942281.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/hallelujah_viola_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/pofonedanopez.pdf
    • https://cdn.shopify.com/s/files/1/0430/0577/1927/files/klasifikasi_bayam_merah.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/pajofomupogozekewibava.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/
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/pajofomupogozekewibava

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000520a.bin
8c7d535a32013836f5c4085f999f2bc4d2e029b0e8b5baa946a74072ab276a63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x520A 5940 bytes
font_01_sfnt_off00006639.bin
3513669f0f4731473d6cbfb13704d2320563c650f073749395e1c383b57b3254		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6639 12444 bytes

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