Malicious PDF — malware analysis report

Static analysis result for SHA-256 486b22f9d3018668…

MALICIOUS

PDF

35.6 KB Created: 2020-08-23 01:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6358f4fd3104300563cdf69e3828f55 SHA-1: 2d576d29fd419e1c0c410c405295295902d7cadc SHA-256: 486b22f9d30186689aa82a95b5eae8071f90a070eaaa9dd89a565776a9aa7856
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic indicating it links to known malicious redirector infrastructure. It also contains a large number of external PDF links, many hosted on Shopify, which is characteristic of a link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=balsa+wood+sheets+2mm, which is likely used to funnel users to a phishing or malware site. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious intent.

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=balsa+wood+sheets+2mm
    • http://tosorerad.transworldgeneralcommerce.com/uploads/1/3/1/1/131164278/zeziwewo.pdf
    • http://files.strathmorediscgolf.com/uploads/1/3/0/7/130740231/7633435.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7913/files/49281755109.pdf
    • https://cdn.shopify.com/s/files/1/0443/8438/7238/files/download_arifureta_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0450/3034/2806/files/adenite_bacteriana_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0436/7230/5817/files/jomopapozulewetadevadupa.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/amazing_grace_my_chains_are_gone_free_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/5046/6454/files/ideal_candidate_profile_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/automatic_pneumatic_hammer.pdf
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/17359550005.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/fifa_20_career_mode_team_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1019/4582/files/joint_venture_agreement_philippines_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/76850338811.pdf
    • https://cdn.shopify.com/s/files/1/0434/0508/2780/files/aprender_a_leer_y_escribir_japones.pdf
    • https://cdn.shopify.com/s/files/1/0443/8907/3062/files/anormalidades_espermaticas_en_bovinos.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_off00004cd3.bin
142082d1b31303a4e489d46e070415a1a8a12d4c5cead6b11b2b4d696d6d1341		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CD3 5244 bytes
font_01_sfnt_off00005e96.bin
22442441696972987458eeed466151ca79fb4323d2088f077718c915218795ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E96 10236 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.