Malicious PDF — malware analysis report

Static analysis result for SHA-256 090c380fd021ee79…

MALICIOUS

PDF

40.7 KB Created: 2020-09-17 13:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44118af7d67c019e9d8b08f66922c5e6 SHA-1: cd92c315db65272c1972909c710926c9303c6566 SHA-256: 090c380fd021ee7912d6b9c7e0ca86a97cc71e7aae71e6b571705e7a8cd36d8a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded links, with a critical heuristic identifying it as a malicious redirector link farm. The primary URL, 'https://ttraff.link/wix?keyword=fhx+apk+free+download', suggests a lure for downloading potentially malicious software. The document body contains garbled text but also includes the same redirector URL, reinforcing its malicious intent. No scripts were extracted, but the extensive link farm points to a phishing or malware distribution scheme.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.link/wix?keyword=fhx+apk+free+download In PDF document text
    • http://wukojut.ncasemocha.com/uploads/1/3/1/6/131636766/ef77b275550.pdfIn PDF document text
    • http://files.toricoryphotography.com/uploads/1/3/1/4/131438405/zasagod-lekakume-jetisenaton.pdfIn PDF document text
    • http://ridebiw.biological-effects.com/uploads/1/3/1/4/131406069/bedulowe-kagakok-fasoxugemofilad.pdfIn PDF document text
    • http://fuduj.viaserena.net/uploads/1/3/1/4/131408170/7195833.pdfIn PDF document text
    • http://files.charisseabellana.com/uploads/1/3/2/7/132740723/lelib.pdfIn PDF document text
    • http://divok.bsajhmi.org/uploads/1/3/2/3/132303219/685796.pdfIn PDF document text
    • http://nipomoti.aldabragallery.com/uploads/1/3/1/3/131383483/xelik.pdfIn PDF document text
    • http://files.myjlstyle.com/uploads/1/3/0/8/130874031/ritom_pukeziwit.pdfIn PDF document text
    • http://luzuj.manawatugymsports.com/uploads/1/3/0/7/130775364/f0789abd8cbae5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1b9f2e2c-9de7-45b9-89d3-ebb3f2e97c10.filesusr.com/ugd/7d1dc9_583cb91f0e1d4fe88c0b24d67e3e4fad.pdf?index=trueIn PDF document text
    • https://2670e51c-0cc4-4e47-a0cb-08ff5e696fe4.filesusr.com/ugd/120874_c849aaaafe724f13be0703563433d4d3.pdf?index=trueIn PDF document text
    • https://65983c07-028c-4008-aee3-58d6ad237b14.filesusr.com/ugd/1b6cec_c9e996ae701649638a7af27eca6f2410.pdf?index=trueIn PDF document text
    • https://99860ae9-2a0f-469e-9722-4b655a71f8f7.filesusr.com/ugd/38062a_e730ae9558ac47e18abb28ad9803208f.pdf?index=trueIn PDF document text
    • https://ac955ef9-cab2-4da3-959f-7b7380aca02d.filesusr.com/ugd/8acad3_a20886eff46043638b955febe92548fd.pdf?index=trueIn PDF document text
    • https://b1d8dc2f-f328-4d7b-88ea-67cd2522a4e7.filesusr.com/ugd/4cf28d_6e36bb514a9048cd89ccf4ba0cd14863.pdf?index=trueIn PDF document text
    • https://177f5528-61dd-4818-a8df-786108ed64c2.filesusr.com/ugd/599f1c_adf45a60b69a48f3b3a14c0b6aa645d6.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EB 5132 bytes
SHA-256: af9ccec0eeb13c868497a1d8c06d69d8c8d60580139eed203e8546f8ec2ba8b7
font_01_sfnt_off00007277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7277 10384 bytes
SHA-256: 9ecf10bf877c1afc004adb282a88aed6c0f4c46f7cd3f9272c9bdae71ab83c2e