Malicious PDF — malware analysis report

Static analysis result for SHA-256 012f34a7465ae4db…

MALICIOUS

PDF

69.3 KB Created: 2021-03-02 16:52:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f0c52ecb6f2a6ca6af796df99c9f1cec SHA-1: 802e6d9c07f87f18ac31b3d596f224d29e7e79bc SHA-256: 012f34a7465ae4dbe66afb8dc53fdedfda3f74793716ffcf52ab920cd5bd0d42
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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.
  • 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://yafferge.ru/wix?keyword=at%2526t+digital+answering+system+manual+1739 In PDF document text
    • http://kafalogu.22web.org/1411913468.pdfIn PDF document text
    • http://doxisodezezaku.iblogger.org/darogujerorubobome.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470389/normal_6017bc57a8b60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393364/normal_5fd6a2366bbaf.pdfIn PDF document text
    • https://rofovotojoroko.weebly.com/uploads/1/3/4/8/134878837/6d161cae65.pdfIn PDF document text
    • https://rawuwivusezorom.weebly.com/uploads/1/3/1/4/131406564/wedijajogixare_xalamusofozajux_barikotakututug_tezalag.pdfIn PDF document text
    • http://manovina.mypressonline.com/toro_weed_eater_battery_charger.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fabupumow.epizy.com/bacterial_growth_curve_ppt.pdfIn PDF document text
    • http://xexobazetozi.epizy.com/50758990298.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/34390506367.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/taxasokuzimurifusipiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/80401634035.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/wedding_day_itinerary_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/40405958724.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_off0000c9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9E4 3284 bytes
SHA-256: 244c307c3e86cdb5571f022c1203b9d55e86df69c8904d421ac56ba4322205af
font_01_sfnt_off0000d5b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B8 4144 bytes
SHA-256: b5c1bb37bc67a10175673d8add07a47736101b1af0b60fb6bf32e713008d04ab
font_02_sfnt_off0000e3db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DB 10560 bytes
SHA-256: 1f4c677aadc8b545489dd051148424731338fb909d680158e2cdb776002cb0b4