Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ff96eab20ad14d…

MALICIOUS

PDF

42.4 KB Created: 2020-08-06 18:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47a66fb283fd13f5efe9c42299cbae04 SHA-1: cedaa6eb686c44e5f27abe06decce3a010737a96 SHA-256: 02ff96eab20ad14d73fa696cea19d843dbbee6436544796ddb3cd29374404056
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body text, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=watermark+pdf+files+download', suggesting a lure for users to download files. The presence of numerous external PDF links, many hosted on Shopify, further indicates an attempt to create a link farm or 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.com/pify?keyword=watermark+pdf+files+download
    • http://rozojen.readysettowing.com/uploads/1/3/1/3/131379894/zuwido.pdf
    • http://files.hitthebarre.com/uploads/1/3/0/7/130775668/zixolaxevumemos.pdf
    • http://files.jakemacshop.com/uploads/1/3/1/0/131069978/raxugobijusiti.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/12827915543.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/31962270657.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/zisikovupifozavijevas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8911/6836/files/dibuzenemid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/18074130031.pdf
    • https://cdn.shopify.com/s/files/1/0431/8792/9245/files/le_couture_clock.pdf
    • https://cdn.shopify.com/s/files/1/0437/6431/8359/files/tixifusonilevuxeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lurexemip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/pogedimufe.pdf
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/kapor.pdf
    • https://cdn.shopify.com/s/files/1/0452/5624/5408/files/apprendre_le_chinois_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/7859681907.pdf
    • https://cdn.shopify.com/s/files/1/0438/6720/9893/files/fitofajidutoranasoz.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000655a.bin
adf6230342c6cad257baca7a38e41b5e6a0c6205dc15cfd2c76c2f7ff2c1a10e
pdf-font-stream PDF embedded font (sfnt) at offset 0x655A 5356 bytes
font_01_sfnt_off00007796.bin
12ebb6998f026b0de9aa2d911162036bbc58c54d01ea323f53fdd5565b59247d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7796 10948 bytes