Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca943d210327da8…

MALICIOUS

PDF

34.1 KB Created: 2020-04-03 01:27:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 5764996aba5681ef985a59a53a378c78 SHA-1: 797d7b4825b34431abdf71fcc706970e7c03d867 SHA-256: aca943d210327da8d7517626e0dcaf51e1af62faa1ccde03cedf96c3e92eea59
104 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning tactic. One prominent link, embedded in the document body, is for 'microsoft project 2010 free download', which is a common lure for malware distribution. The heuristic PDF_SEO_LINK_FARM firing indicates a large number of external links were generated, likely to manipulate search engine results and drive traffic to malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://buythedangboots.net/uploads/1/3/0/8/130874097/130874097.html#microsoft+project+2010+free+download PDF link annotation
    • http://klinedogs.com/uploads/1/3/0/5/130588394/viturege.pdfIn PDF document text
    • http://tennesseetrey.net/uploads/1/3/0/3/130313585/01065d6.pdfIn PDF document text
    • http://southmaincap.us/uploads/1/3/0/3/130313673/4461b118787f8c.pdfIn PDF document text
    • http://yourfirst100percentprofit.com/uploads/1/3/0/5/130551330/favozarad_jenusujovi.pdfIn PDF document text
    • http://dent-detective.com/uploads/1/3/0/3/130313117/povalugilok.pdfIn PDF document text
    • http://civitaspress.net/uploads/1/3/0/5/130547286/borokedidokibamuden.pdfIn PDF document text
    • http://marybellesboutiquecom.com/uploads/1/3/1/4/131436983/ee0e9f3129ccd9.pdfIn PDF document text
    • http://katysseniorconciergeservice.com/uploads/1/3/0/8/130873712/mejakelut-movozazijasim.pdfIn PDF document text
    • http://capsbhc.com/uploads/1/3/0/7/130775627/5409443.pdfIn PDF document text
    • http://happyfeat411.com/uploads/1/3/0/6/130640074/somoxaw.pdfIn PDF document text
    • http://jojobranding.com/uploads/1/3/0/5/130543552/pizisesapariz.pdfIn PDF document text
    • http://dedicated2learning.com/uploads/1/3/0/9/130969327/9fcd6e.pdfIn PDF document text
    • http://muzoesmeraldas.com/uploads/1/3/1/0/131070841/fd170a9f2f5b.pdfIn PDF document text
    • http://muellerwood.works/uploads/1/3/0/6/130621180/8377928.pdfIn PDF document text
    • http://laurenshaw.org/uploads/1/3/0/7/130739535/tibefigodovux.pdfIn PDF document text
    • http://thetuscanvillages.com/uploads/1/3/1/3/131379321/1a3243f657.pdfIn PDF document text
    • http://influx.ca/uploads/1/3/1/1/131164383/luzodonutomem-jomarekibunotiv-xipefafuxi-liletusiba.pdfIn PDF document text
    • http://glowupglamshop.org/uploads/1/3/0/4/130494636/jezekumojifiget_ranoxesi_gakazigunew.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C71 7396 bytes
SHA-256: b95853c32f4ac7fba70e3e4fb6a7daa63a4732363d28e5762458dbe2785378e6

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