Malicious PDF — malware analysis report

Static analysis result for SHA-256 70611562b1466682…

MALICIOUS

PDF

106.5 KB Created: 2020-10-04 06:45:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dda5bcb34403547ded367bf2a5aeaca9 SHA-1: ea98588dbf5feeffe362e1f9332f5c1454fcb8d6 SHA-256: 70611562b14666829d2d2fdcb13d7157d80aa506d8e6654b6886040f64fd39ab
174 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also flagged as malicious. The presence of numerous links and the ML classifier's high confidence score indicate a deliberate attempt to direct users to harmful sites, likely for further exploitation or phishing.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/strik?keyword=grim+dawn+sorcerer+leveling+guide In PDF document text
    • http://bodiba.terriermath.com/uploads/1/3/0/8/130874493/3560970.pdfIn PDF document text
    • http://files.cookingwithkoko.com/uploads/1/3/1/3/131382700/jenovoxubafe_sebor_kositaganas.pdfIn PDF document text
    • http://gibugofo.palettefoodservice.com/uploads/1/3/1/3/131384279/lizidigowixuz_sujaxazuj.pdfIn PDF document text
    • http://files.troutbum.ca/uploads/1/3/2/7/132710655/046c6686a.pdfIn PDF document text
    • http://files.southbayscooterposse.com/uploads/1/3/1/3/131398385/kofafetolomamuxume.pdfIn PDF document text
    • https://site-1036884.mozfiles.com/files/1036884/wowamenodazuvolokamupusuz.pdfIn PDF document text
    • https://site-1036637.mozfiles.com/files/1036637/kasunumew.pdfIn PDF document text
    • https://site-1036686.mozfiles.com/files/1036686/4312328518.pdfIn PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/kigodekenolomarep.pdfIn PDF document text
    • http://dopez.rohanbopannatennis.com/uploads/1/3/1/3/131380213/64645.pdfIn PDF document text
    • http://punidi.st-michael-school.org/uploads/1/3/1/3/131398140/e0c74f.pdfIn PDF document text
    • http://files.valleyfarm.ca/uploads/1/3/2/7/132740352/b4fce.pdfIn PDF document text
    • http://files.balloontwistersdcvamd.com/uploads/1/3/0/9/130969375/gipagazovupibiz_tolokaduwimola.pdfIn PDF document text
    • http://files.riefcanada.com/uploads/1/3/2/8/132815793/4007292.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8762/4344/files/the_blythes_are_quoted_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/5249/7827/files/mario_bloopers_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3047/7472/files/niliveminixeloxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4460/0470/files/steel_dragon_strategy_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/1358/3260/files/54136260292.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14925 5244 bytes
SHA-256: 73fe556b99e2d55ac941f27e34d73cfe72ee7a42c0b4b569e3942c97f726e08b
font_01_sfnt_off00015aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AEE 16420 bytes
SHA-256: 225152357ddc6e96cdf84d49a60dc18c7658728ce6533753a018f2854d86297d
font_02_sfnt_off00018e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E0F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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