Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 9867dd3711d7428c…

MALICIOUS

PDF / .VIR

419.4 KB Created: 2023-05-17 03:47:13 Authoring application: SWFTools First seen: 2024-05-27
MD5: 0caa185bbde77b3a16659ac440035c5d SHA-1: ddae5ce16dabadad06bbabe14159b790801eb945 SHA-256: 9867dd3711d7428c6f4afed6ea4e45809bf801878d4559dee792825349dd4d1d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0157

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://puzawozowel.octort.co.za/858433152952063972?petoruvapikinejumekapuwupobanafofajetomor=nalimufufogimiwodagefazotasuzabofupusuwumesomaligogefixiwanavifijolezivusozajeruruxejeladevotibepolavubekegepenaxasafexewikikilejufagikumukagebutumozukesejiludekorirebijizunuponowazexivudisamodogatafiran&utm_term=android+games+like+shellshock+live&memalabenepuveposetobodinabigunazelirudagiruxamuwexudipatodewisabitaditezapuxulu=vunotuzivofugaxufomupebokifegonofoxepupokorefunopiviruviwibegagiketosajitinisipimiwavujojomuxoluwewofoxizelijetaxiwubanorepegidejiz In PDF document text
    • https://puzawozowel.octort.co.za/858433152952063972?petoruvapikinejumekapuwupobanafofajetomor=nalimufufogimiwodagefazotasuzabofupusuwumesomaligogefixiwanavifijolezivusozajeruruxejeladevotibepolavubekegepenaxasafexewikikilejufagikumukagebutumozukesejiludekorirebijizunuponowazexivudisamodogatafiran&utPDF link annotation
    • https://puzawozowel.octort.co.za/858433152952063972?petoruvapikinejumekapuwupobanafofajetomor=nalimufufogimiwodagefazotasuzabofupusuwumesomaligogefixiwanavifijolezivusozajeruruxejeladevotibepolavubekegepenaxasafexewikikilejufagikumukagebutumozukesejiludekorirebijizunuponowazexivudisamodogatafiran&utm_term=android+games+like+shellshock+live&memalabenepuveposetobodinabigunazelirudagiruxamuwexudipatodewisabitaditezapuxulu=vunotuzivofugaxufomupebokifegonofoxepupokorefunopiviruviwibegagiketosajitinisPDF link annotation
    • http://wenq.org/In extracted file (font_00_sfnt_off00062ee3.bin)
    • 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://nmr.mgh.harvard.edu/~fangq/In extracted file (font_00_sfnt_off00062ee3.bin)
    • http://www.gnu.org/copyleft/gpl.htmlIn extracted file (font_00_sfnt_off00062ee3.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_01_sfnt_off00063ac0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off00063ac0.bin)
🗂 Part of campaign: wenq.org 13 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00062ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE3 3588 bytes
SHA-256: 2a956134f12d9d50509c25659b83d6a71792a9154973d87cc4b15673425c1a72
font_01_sfnt_off00063ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AC0 10660 bytes
SHA-256: 7050e0b0ca2fe80e0f155d3d5d22798f929512678d282fd6d3563470b00c2601
font_02_sfnt_off0006531a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6531A 16928 bytes
SHA-256: 8900a6feb966b00e4e6603e6812549156a2144b852e0bc74e6eda57480550afe