Malicious PDF — malware analysis report

Static analysis result for SHA-256 19084d5ff64df97e…

MALICIOUS

PDF

46.7 KB Created: 2020-08-14 18:04:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 961494d0cb4b2cd89ae8cc8d18d2bbf1 SHA-1: ab37c8116ed7152eaca7fb8022da8d90d32a55a3 SHA-256: 19084d5ff64df97ea0419898b345dcea38a0a67c07b21c7aca5b5c5a8a5ff059
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a lure for an advance-fee scam, presenting a 'free movie' to entice users to click embedded links. One of these links, 'https://ttraff.ru/pify?keyword=2022+tsunami+hollywood+movie+free', points to known malicious redirector infrastructure. The document also contains a large number of links to other PDFs, suggesting a link farm or SEO manipulation tactic. No scripts were extracted, but the presence of malicious redirectors and the advance-fee scam lure strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=2022+tsunami+hollywood+movie+free
    • http://files.designsbycarolann.com/uploads/1/3/0/8/130814513/ac27058e6e8.pdf
    • http://nagiromem.hadialqazwini.com/uploads/1/3/0/7/130740596/mepij-viduzovudov-koxaj.pdf
    • http://lidival.eyespyicare.com/uploads/1/3/0/7/130738721/599881.pdf
    • http://picfs.com/18p8g7
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • https://cdn.shopify.com/s/files/1/0434/1959/9004/files/zapowumaxagimimejam.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/xukanote.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/78644862321.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/18831136703.pdf
    • https://cdn.shopify.com/s/files/1/0437/7267/4209/files/sinufanatogoxuvadaromi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1943/files/59538067365.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/kufazeroguxorukux.pdf
    • https://cdn.shopify.com/s/files/1/0429/4216/9244/files/4152053490.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/plague_inc_necroa_virus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5165/5076/files/sibubegutumaxewodevuxofi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/pamowoperepagow.pdf
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/79711356444.pdf
    • https://cdn.shopify.com/s/files/1/0434/7586/1656/files/present_simple_continuous_exercises_intermediate.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/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000606d.bin
675d73b556e3debcbc5b44241a98ee9d3deee77b3cc85f21b2aa3a236a2ede2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x606D 5580 bytes
font_01_sfnt_off0000733d.bin
8fba9e89bdfa2311ff37fa0c40308dd7125e460da5a3f124f28395328c54d35e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 7960 bytes
font_02_sfnt_off00008940.bin
bf3afacfc6216fe629e50cebbd640409bffcf35130c8bc41177becc312b06b29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8940 10656 bytes

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